n = int(input())

if n >= 1800:
  print(1)
elif n >= 1600:
  print(2)
elif n >= 1400:
  print(3)
elif n >= 1200:
  print(4)
elif n >= 1000:
  print(5)
elif n >= 800:
  print(6)
elif n >= 600:
  print(7)
else:
  print(8) n = int(input()) n int(input()) int input() input if n >= 1800:
  print(1)
elif n >= 1600:
  print(2)
elif n >= 1400:
  print(3)
elif n >= 1200:
  print(4)
elif n >= 1000:
  print(5)
elif n >= 800:
  print(6)
elif n >= 600:
  print(7)
else:
  print(8) n >= 1800 n 1800 print(1) print 1 elif n >= 1600:
  print(2) n >= 1600 n 1600 print(2) print 2 elif n >= 1400:
  print(3) n >= 1400 n 1400 print(3) print 3 elif n >= 1200:
  print(4) n >= 1200 n 1200 print(4) print 4 elif n >= 1000:
  print(5) n >= 1000 n 1000 print(5) print 5 elif n >= 800:
  print(6) n >= 800 n 800 print(6) print 6 elif n >= 600:
  print(7) n >= 600 n 600 print(7) print 7 print(8) print 8 n = int(input()) int(input()) n
n = int(input())

if n >= 1800:
  print(1)
elif n >= 1600:
  print(2)
elif n >= 1400:
  print(3)
elif n >= 1200:
  print(4)
elif n >= 1000:
  print(5)
elif n >= 800:
  print(6)
elif n >= 600:
  print(7)
else:
  print(8)